75 grain 223 hornady imr 4064 load data help needed

[Unretarded]

Best guess across al sources I found from reloading books and internet sites.


No one lists this exact combo, but it is listed for different bullet brands in the same weight.

Fully prepped sammi IMI brass.

Loaded a max of 22.5 gr imi 4064 to test.

also doing 22-21.5-21

Load data seems all over the map on this one.

seating depth is stated from hornady that it can be seated to mag length.........book data is 2.260 and some books at 2.250, I am at approx 2.253.


Anyone have any experiance in this load and powder.....

will start with the lowest charge of 21 first and shoot up from there to 22.5

Also 22.5 seems borderline as almost starting to compress, occasional slight crunch and no sound when shaken.

I am 99.9% sure this will not go boom


Anything sound crazy to you guys ?

I am to the very low side on all the close data I can find.

It lists the 75 grain Amax as a max charge of 24.7 and a low of 22.2.

This seems within a grain of all the data on 75-77 in different brands.

I hate starting off from a unknown..........thanks

[milotrain]

IMR 4064 is LONG, like trying to stuff cordite in a 223 case long. I'd use non IMR 4064 like AA4064 or H4064. Or try using a drop tube.

I also see 22-24.7gr in the sources I have data for. Compressed loads aren't the absolute worst things ever, we run them all the time with Varget and an 80gr SMK in the AR. But if you are crunching at 22.5 then you might need one hell of a drop tube.

[OpenSightsOnly]

OP, what chamber do you have?

This is my current load being used for a 7 twist WOA A2 upper

77 Nosler, 24.5 grs of IMR 4064, LC case, Tula SRM primer, seated to approx 2.23"

For 80 grain bullets, same thing but seated with a 0.020" jump or approx 2.46"

[highpower790]

Re15,varget,Imr4895/4320 are some I would use.Imr 4064 is one I would not,unless it was for a case larger than .223 rem.Resist the temptation to use a ball powder beyond the experimental stage.Ball powder may meter great ,but now that we are headed into summer look for groups to open with a noticeable loss in accuracy above 75 degrees.if you a shooter that goes to a certain range all the time,never leaving the 100yd line,then ball powder may be for you.On the other hand if you go to different ranges with different climate conditions a temp insensitive powder such as Varget would be the better choice.

[Unretarded]

IMR 4064 is LONG, like trying to stuff cordite in a 223 case long. I'd use non IMR 4064 like AA4064 or H4064. Or try using a drop tube.

I also see 22-24.7gr in the sources I have data for. Compressed loads aren't the absolute worst things ever, we run them all the time with Varget and an 80gr SMK in the AR. But if you are crunching at 22.5 then you might need one hell of a drop tube.

Thanks !


Not the best powder I know.

I should clear it is not like biting into a potato chip, more like 1 or 2 grains are breaking, barely hear and feel them, would be easy to miss.

I went ahead and loaded 10 each of 23 and 23.5 as the max and on 23.5 you could hear 2 or 3 grains break each time.

When looking into the charged case it is just coming barely past where the shoulder starts.

Checked on the beam scale and 2 digital scales to make sure it was a true powder charge.

The lowest charge is 21.5 to 23.5, starting at 21.5 I feel pretty confident it will not go boom.....will monitor each shot for gun/brass problems.

[Unretarded]

OP, what chamber do you have?

This is my current load being used for a 7 twist WOA A2 upper

77 Nosler, 24.5 grs of IMR 4064, LC case, Tula SRM primer, seated to approx 2.23"

For 80 grain bullets, same thing but seated with a 0.020" jump or approx 2.46"

I have a bravo company upper, I think it was a wylde, possibly a 5.56 nato.

No match gun but it grouped approx moa with factory IMI 55 grain 556.


Thanks for the info, I feel my charges of 21.5 to 23.5 are safe in the 75 hpbt hornady now that I see the info I came across jives with what everyone is saying/doing.

[Unretarded]

Re15,varget,Imr4895/4320 are some I would use.Imr 4064 is one I would not,unless it was for a case larger than .223 rem.

Thanks, I will be using some different powders to see what the gun likes combined with what meters well.

I am also loading for .270 and .308 and the imr 4064 is what I had a 8 pound keg of, so I figured why not load up a batch and see, I might get lucky.

I found out fast it meters poorly and needs some help getting in the case, these are being hand loaded with a trickler top off anyway so not much more hands on in the end.

I f nothing looks good from this batch I will try some of the powders you listed, thanks.

[OpenSightsOnly]

I have a bravo company upper, I think it was a wylde, possibly a 5.56 nato.

No match gun but it grouped approx moa with factory IMI 55 grain 556.


Thanks for the info, I feel my charges of 21.5 to 23.5 are safe in the 75 hpbt hornady now that I see the info I came across jives with what everyone is saying/doing.

I have a chargemaster and a jug of IMR 4064 so charging an LC case with 24.5 grains is not as painfully LONG

Now that is getting warmer, I may have back the charge down to 24.2 or 24 grains even.

Out of a 7 twist, Hornady's 75 BTHP is a very good bullet as well as the 75 Amax.

[Unretarded]

I have a chargemaster and a jug of IMR 4064 so charging an LC case with 24.5 grains is not as painfully LONG

Now that is getting warmer, I may have back the charge down to 24.2 or 24 grains even.

Out of a 7 twist, Hornady's 75 BTHP is a very good bullet as well as the 75 Amax.

OOpps, forgot to add, 1 in 7 twist also on mine.........auto powder measure is looking good about right now and I am only 100 rounds in so far......lol

[dwalker]

I shoot the 75gr Hornaday BTHPM over 24.3gr of TAC and its ahot load for sure, super accurate but near max. I would suggest starting with 22.5-ish grains and laddering up.
My exact load is:

75Gr Hornady BTHPM
Federal 205M primer (Gold Medal Match)
24.3gr of Tac
OAL 2.50

Out of my 18" barrel I am seeing 2700-2750fps.

I have 4064 but I do not think this is a good powder for the round. I have thought about using CFE.223 just have not gotten to work on it yet. Win748 might also work well with the 75gr'ers.

[milotrain]

TAC is brilliant for a ball powder, I don't think I'd bother trying to figure a different one out.

I haven't seen a reference for this data so take it for what it is:
HS-6 1.21fps per *
H110/W296 1.24 fps per *
Imr4227 1.17fps per *
Lil' Gun 1.31 fps per *
RL10x .71 fps per*
Benchmark .44 fps per *
Imr3031 .73 fps per *
Imr8208xbr .59 fps per *
H4895 .23 fps per *
Alliant Varmint pro .89 fps per *
Alliant AR comp .77 fps per *
Varget .19 fps per *
W748 1.32 fps per *
Imr4064 .53 fps per *
Ramshot Tac .91 fps per *
Imr4895 .87 fps per *
AA4064 1.11 fps per *
AA2520 .98 fps per *
RL15 1.52 fps per * from 50* and up
PP2000MR .99 fps per *
Imr4320 1.32 fps per *
Ramshot Biggame .98 fps per *
H380 1.44 fps per *
VV N150 1.08 fps per *
H414/W760 1.42 fps per *
Imr4350 .64 fps per *
AA4350 .47 fps per *
H4350 .29 fps per *
RL17 1.42 fps per *
Hybrid 100v .78 fps per *
RL19 1.61 fps per *
VV N160 1.24 fps per *
Imr4831 1.19 fps per *
Ramshot Hunter .86 fps per *
H4831 .36 fps per *
RL22 1.71 fps per *
Imr7828 1.36 fps per *
Magpro 1.01 fps per *
H1000 .21 fps per *
RL25 1.59 fps per *
Ramshot Magnum .87 fps per *
Retumbo .49 fps per *
RL33, still trying to get my data for this one.
US869 1.68 fps per *
H50bmg 1.64 fps per *

[Unretarded]

Is that velocity change per granule of powder? or per degree of temp...

[milotrain]

[JohnCCW]

Much better powders for .223 than 4064. Even in 308 size cases, 4064 is nostalgic, not optimum.

[Unretarded]

Thanks, I could incorporate that into my charts instead of using the laser temp gun on each round once I get that far into it.....thanks!